Zhang Shuo (CIK 1782026) reported 3 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-12). Recent activity: Sell PDFS (1,501 shares), Buy PDFS (2,689 shares), Buy PDFS (7,429 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-12 | PDF SOLUTIONS INC (PDFS) | Director | Sell | 1,501 | $77,256 |
| 2026-07-02 | PDF SOLUTIONS INC (PDFS) | Director | Buy | 2,689 | $0 |
| 2025-07-02 | PDF SOLUTIONS INC (PDFS) | Director | Buy | 7,429 | $0 |
Source: SEC Form 4 filings · as of 2026-08-12